—Did you find the missing couple in the mountain yesterday?—No, but we ______ to get in touch with them ever since.
#100903
A
had tried
B
have tried
C
have been trying
D
had been trying
推荐题目
Everyone here，including kids，________ their attention on the matter.
#103610
A
focus
B
focuses
C
to focus
D
focusing
---Why did you leave that position?---I a better position at IBM.
#101007
A
offer
B
offered
C
am offered
D
was offered
----What was the party like? ----Wonderful. It’s years _____ I enjoyed myself so much.
#101010
A
after
B
before
C
when
D
since
---Are you still very busy? ---Yes, I _____ the report for the manager and it won’t take long．
#103212
A
have just finished
B
am just finishing
C
had just finished
D
am just going to finish
Great changes___ have taken place _____ in the city, and a lot of factories________.
#100428
A
have been taken place; have been set up
B
have taken place; have been set up
C
have taken place; have set up
D
were taken place; were set up